3212202121 has 4 divisors (see below), whose sum is σ = 3220460100. Its totient is φ = 3203944144.

The previous prime is 3212202089. The next prime is 3212202143. The reversal of 3212202121 is 1212022123.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1941636096 + 1270566025 = 44064^2 + 35645^2 .

It is a cyclic number.

It is not a de Polignac number, because 3212202121 - 2⁵ = 3212202089 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3212202095 and 3212202104.

It is not an unprimeable number, because it can be changed into a prime (3212002121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4128406 + ... + 4129183.

It is an arithmetic number, because the mean of its divisors is an integer number (805115025).

Almost surely, 2^3212202121 is an apocalyptic number.

It is an amenable number.

3212202121 is a deficient number, since it is larger than the sum of its proper divisors (8257979).

3212202121 is an equidigital number, since it uses as much as digits as its factorization.

3212202121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8257978.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 3212202121 is about 56676.2924069668. The cubic root of 3212202121 is about 1475.4832653374.

Adding to 3212202121 its reverse (1212022123), we get a palindrome (4424224244).

The spelling of 3212202121 in words is "three billion, two hundred twelve million, two hundred two thousand, one hundred twenty-one".